Bottle opener



FIG. 1 is a top, front, left-side perspective view of a bottle opener showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof, the left side view being a mirror image; and,

FIG. 4 is a bottom view therof. 

The ornamental design for a bottle opener, as shown and described. 